Electrical regulator.



'No. 717,918. PATENTBD JAN. 6, 1903.

G. P. PHILBRIGK. ELBGTRIGAL REGULATOR APPLICATION FILED JUNE 13, 1902.N0 MODEL.

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CHARLES PIERSON PHILBRICK, OF WYMORE, NEBRASKA, ASSIGNOR OF ONE-HALF TOJOHN-A. REULING, OF WYMORE, NEBRASKA.

ELECTRICAL REGULATOR.

SPECIFICATION forming part of Letters Patent No. 717,918, dated January6, 1903.

Application filed June 13,1902.

To aZZ whom, it may concern:

Be it known that I, CHARLES PIERSON PHIL- BRIOK, a citizen of the UnitedStates, and a resident of VVymore, in the county of Gage and State ofNebraska, have invented a new and Improved Electrical Regulator, ofwhich the following is a full, clear, and exact description. I

My invention relates to pressure-controlled electric mechanism forregulating the flow of fuel to a furnace located beneath a boiler.

Referenceis to be had to the accompanying drawing, forming a part ofthis specification, in which the figure represents my invention asapplied to a steam-boiler energized by liquid fuel.

The boiler 1 is provided with a pressure-motorconsistingofa casing2,provided with a diaphragm 3,upon which diaphragm is mounted a movableplunger 4, provided with a point 5, the arrangement being such thatvariationsin the pressure of the boiler produce corresponding variationsin the position of the point 5. The outer end of the casing 2 is rigidlysecured to the frame 6, and through this frame the plunger 4 is free tomove longitudinally when actuated by the diaphragm. Upon a pivot 7,supported by a bracket 9, is mounted a bell-crank lever 8, connected bya spring with the frame 6. An adjusting-screw 11, provided with aclamping-nut 12, forms the intermediate connection between the spring 10and the bell-crank lever. Upon the free end of the bell-crank leveris asomewhat similar adjustingscrew 13, provided with a thumb-nut 14. Thescrew 13 engages an electrode 15, having the form of a leaf-spring andpivoted at 16 upon an insulating-bracket 17, secured by means of a screw18 upon the rod 19 of the frame 6. This insulating-bracket 17 may beremoved from the rod 19 by removing the screw 20.

The free end of the leaf-spring is provided with a contact 21,preferably of platinum, which engages a contact-screw 22, alsopreferably of platinum, this screw being adjustable by means of athumb-nut 23. A battery 24 is provided with wires 25 26, leading tobinding-screws 27 and 29. Bindingscrews 28 and are connected bya wire29.

are No. 111,495. (No inodel.)

The binding-screws 29 and 30 are mounted upon a block 31.

' The post 19 is insulated from the frame 6, but is electricallyconnected with the binding-post 2S.

A hollow casing 32 is closed by a disk 33, from which projects a stem34'for supporting the block 31. The outer end of this stem is threadedat 34 and is engaged by a thumbnut 35, the arrangement being such thatthe thumb -nnt 35 by pulling upon the rod 34 clamps the magnets 36firmly between the disk 33 and the block 31. In order to remove themagnets, therefore, it is necessary to loosen the thumb-nut 35.

Within the casing 32 is a disk-shaped armature 37, mounted upon the endof a stem 38. A plate 39, provided with a channel 40,is secured upon asupplypipe 41, leading to the tank or other reservoir containing theliquid fuel. This plate contains another channel 42, connected with apipe 43, leading to the furnace for the purpose of supplying liquid fuelthereto. Within the plate is a substantially conical aperture 44, andwithin this aperture a valve is normally free to play. A guide 46 isprovided with an aperture 47, into which the stem 38 loosely projects,as indicated in the upper part of the figure. The bell-crank lever S isconnected by means of a coil spring wire 48 with the leaf-spring 15, andthis spring is in turn supported by another leafspring 49, which restsloosely upon the insulation 50. The post 19 is insulated from the frame6 by means of the-insulation 51.

Normally the liquid fuel flows through the The electric circuit is asfollows: battery 24, Wire 25, binding-post 27, frame 6, bellcrank lever8, screw 13, leaf-spring 15, con- Ioo tacts 21 22, binding-post 28, wire29, binding-post 30, magnets 36, binding-post 29, wire 26, and battery24:.

The operation of my device is as follows: Suppose that the machinery isin operation and that the boiler 1 is carrying a normal pressure of,say, one hundred and forty pounds per square inch. Suppose, further,that the flow of the fuel is a little too free and that the boilerthereby becomes' heated a little above its normal temperature. Theresulting increase of pressure causes the diaphragm 3 to move slightlyto the left, beyond its normal position, thereby actuating thebell-crank lever 8 and causing the leaf-spring 15 to bend slightly,thereby bringing the contacts 21 22 together. The battery 2i themuponimmediately energizes the magnet, which draws the armature 37, seats thevalve 4-5, and checks the flow of fuel, thereby gradually checking theheat of the boiler and causing the pressure of the boiler to drop downto its normal degree.

It should be noted that the bell-crank lever 8 is adjustable relativelyto the leaf-spring by means of the screw 13 and thumb-nut 14 and thatthe contact-point 22 is also adjustable relatively to thecontact-point2l upon the outer end of the leaf-spring. The bell-cranklever and the leaf-spring therefore together constitute a sort ofcompound lever, in which great sensitiveness and great adaptability canbe attained.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent- 1. An electric regulator, com prisinga boiler,

a member for controlling the fuel-supply thereof, a magnet for actuatingsaid member, a pressure-motor connected with said boiler and actuated bypressure therefrom, a source of electricity, a contact connected withsaid magnet and with said source of electricity, said contact beingnormally open, and a bellcrank lever provided with an adj usting-screwfor engaging said contact and connected with said pressure-motor.

2. An electricregulator,com prising a boiler, a member for controllingthe fuel supply thereof, a magnet for actuating said member, apressure-motor connected with said boiler and actuated by pressuretherefrom, a source of electricity connected with said magnet, a contactconnected with said magnet and with said source of electricity, meansfor adjusting said contact, a bell-crank lever provided with a screw forengaging said contact, means for adjusting said screw relatively to saidcontact, and a spring for normally compressing said lever against saidpressure-motor, causing said lever to be actuated thereby.

3. An electric regulator,com prising a boiler, a member for controllingthe fuel supply thereof, a magnet for actuating said member, apressure-motor connected with said boiler and actuated by pressuretherefrom, a source of electricity connected with said magnet, a contactconnected with said magnet and with said source of electricity, saidcontact being provided with a lever, a second lever connected with saidpressure-motor and with said last-mentioned lever, said two leversacting together as a compound lever, thereby increasing thesensitiveness of said contact, and means for adjusting said leversrelatively to each other.

4:. An electric regulator,comprisinga boiler, a member for controllingthe fuel supply thereof, a magnet for actuating said member, apressure-motor connected with said boiler and actuated by pressuretherefrom, a source of electricity connected with said magnet, a contactconnected with said magnet and with said source of electricity, saidcontact being provided with a lover, a second lever connected with saidpressure-motorand with said first-mentioned lever, thus forming acompound lever for the purpose of increasing the sensitiveness of saidcontact, and means for adjusting said contact relatively to said levers.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES PIERSON PHILBRIGK.

Witnesses:

E. J. GILLEsPIE, G. W. HARPSTER.

